Nonsuperatomic [Au23(SC6H11)16]− Nanocluster Featuring Bipyramidal Au15 Kernel and Trimeric Au3(SR)4 Motif

Nonsuperatomic [Au23(SC6H11)16]− Nanocluster Featuring Bipyramidal Au15 Kernel and Trimeric Au3(SR)4 Motif

We report the X-ray structure of a cyclohexanethiolate-capped [Au23(SR)16]− nanocluster (counterion: tetraoctylammonium, TOA+). The structure comprises a cuboctahedron-based bipyramidal Au15 kernel, which is protected by two staple-like trimeric Au3(SR)4 motifs, two monomeric Au­(SR)2 and four plain...

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Veröffentlicht in:Journal of the American Chemical Society 2013-12, Vol.135 (49), p.18264-18267
Hauptverfasser: Das, Anindita, Li, Tao, Nobusada, Katsuyuki, Zeng, Chenjie, Rosi, Nathaniel L, Jin, Rongchao
Format: Artikel
Sprache:eng
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Zusammenfassung:We report the X-ray structure of a cyclohexanethiolate-capped [Au23(SR)16]− nanocluster (counterion: tetraoctylammonium, TOA+). The structure comprises a cuboctahedron-based bipyramidal Au15 kernel, which is protected by two staple-like trimeric Au3(SR)4 motifs, two monomeric Au­(SR)2 and four plain bridging SR ligands. Electronic structure analysis reveals nonsuperatomic feature of [Au23(SR)16]− and confirms the Au15 kernel and surface motifs. The Au15 kernel and trimeric staple motif are unprecedented and offer new insight in understanding the structure evolution of gold nanoclusters.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja409177s